Relates to MC-273770. I believe this was caused by inventory changes behind the scenes.
I would like to mention a spelling error in the description.
<blockquote> Throwable projectiles like snowballs, eggs, etc. are no rendered for the first 2 ticks when being nearby to prevent them from flashing on the screen.</blockquote>
After fixing this you can delete my coment.
Could someone correct the summary? Dismounting places you in the same space as you, not the same space as your mount. This can clearly be viewed in the attached video. Does not affect minecarts too.
Relates to MCPE-162215, same problem.
Java edition fix reverted in 25w03a. See MC-279494.
Still affects, making farmland with hoe MCPE-164731, MCPE-167133, MCPE-189880. This was not a valid parity issue.
Relates to MC-212226.